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HerbIsatidis Folium

大青叶

Dà Qīng Yè

Isatis Leaf

The dried leaf of Isatis indigotica (Brassicaceae). Cold and bitter, entering the Heart and Stomach channels. From the same plant as Ban Lan Gen (the root), it clears heat, resolves toxicity, cools the blood, and dissipates macules. Commonly used for warm disease with eruptions, sore throat, and mumps.

Actions · 功效

清热解毒Clear heat and resolve toxicity
凉血消斑Cool the blood and dissipate macules
利咽消肿Benefit the throat and reduce swelling

Indications · 主治

温病高热，神昏发斑Warm disease with high fever, clouded consciousness, and macules
咽喉肿痛Swollen, sore throat
痄腮丹毒Mumps and erysipelas

Dosage · 用量

Per day · decoction · non-pregnant adult

9–15 g

Reference range for non-pregnant adults. Not a personalized prescription. Pregnancy, lactation, and pediatric use require specialist supervision.

Draft· 2026-04-16

Footnotes · 引用

[1]Shennong Bencao Jing (Divine Husbandman's Materia Medica)
[2]Mingyi Bielu (Supplementary Records of Famous Physicians)
[3]Bencao Gangmu (Compendium of Materia Medica)

Permalink · CC BY-SA 4.0

Cite this entry

@misc{bencaodian-da-qing-ye,
  author       = {{Bencaodian Editorial}},
  title        = {Dà Qīng Yè 大青叶 (Isatis Leaf) — Isatidis Folium},
  year         = {2026},
  howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
  url          = {https://bencaodian.org/en/herbs/da-qing-ye},
  urldate      = {2026-04-16},
  note         = {CC BY-SA 4.0}
}

Permalink is fixed

@misc{bencaodian-da-qing-ye, author = {{Bencaodian Editorial}}, title = {Dà Qīng Yè 大青叶 (Isatis Leaf) — Isatidis Folium}, year = {2026}, howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine}, url = {https://bencaodian.org/en/herbs/da-qing-ye}, urldate = {2026-04-16}, note = {CC BY-SA 4.0} }